From 2086faae3c55a652cfbd369e18ecdb703aacc493 Mon Sep 17 00:00:00 2001 From: Kars de Jong Date: Tue, 19 Nov 2019 21:20:20 +0100 Subject: [PATCH] scsi: esp_scsi: Correct ordering of PCSCSI definition in esp_rev enum The order of the definitions in the esp_rev enum is important. The values are used in comparisons for chip features. Add a comment to the enum explaining this. Also, the actual values for the enum fields are irrelevant, so remove the explicit values (suggested by Geert Uytterhoeven). This makes adding a new field in the middle of the enum easier. Finally, move the PCSCSI definition to the right place in the enum. In its previous location, at the end of the enum, the wrong values are written to the CONFIG3 register when used with FAST-SCSI targets. Link: https://lore.kernel.org/r/20191119202021.28720-2-jongk@linux-m68k.org Signed-off-by: Kars de Jong Signed-off-by: Martin K. Petersen --- drivers/scsi/esp_scsi.c | 2 +- drivers/scsi/esp_scsi.h | 17 +++++++++-------- 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c index bb88995..4fc3eee 100644 --- a/drivers/scsi/esp_scsi.c +++ b/drivers/scsi/esp_scsi.c @@ -2373,10 +2373,10 @@ static const char *esp_chip_names[] = { "ESP100A", "ESP236", "FAS236", + "AM53C974", "FAS100A", "FAST", "FASHME", - "AM53C974", }; static struct scsi_transport_template *esp_transport_template; diff --git a/drivers/scsi/esp_scsi.h b/drivers/scsi/esp_scsi.h index 91b32f2..f764d64 100644 --- a/drivers/scsi/esp_scsi.h +++ b/drivers/scsi/esp_scsi.h @@ -257,15 +257,16 @@ struct esp_cmd_priv { }; #define ESP_CMD_PRIV(CMD) ((struct esp_cmd_priv *)(&(CMD)->SCp)) +/* NOTE: this enum is ordered based on chip features! */ enum esp_rev { - ESP100 = 0x00, /* NCR53C90 - very broken */ - ESP100A = 0x01, /* NCR53C90A */ - ESP236 = 0x02, - FAS236 = 0x03, - FAS100A = 0x04, - FAST = 0x05, - FASHME = 0x06, - PCSCSI = 0x07, /* AM53c974 */ + ESP100, /* NCR53C90 - very broken */ + ESP100A, /* NCR53C90A */ + ESP236, + FAS236, + PCSCSI, /* AM53c974 */ + FAS100A, + FAST, + FASHME, }; struct esp_cmd_entry { -- 2.7.4